Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The shift into September uncovers an average high-temperature of a still refreshing 18°C (64.4°F), subtly different from the previous month. September brings an average low-temperature of 12.7°C (54.9°F) to Lanvellec.Humidity
The months with the lowest humidity are February through April, September and October, with an average relative humidity of 82%.Rainfall
The month with the least rainfall in Lanvellec is September, when the rain falls for 13.7 days and typically collects 28mm (1.1") of precipitation.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day in Lanvellec is 12h and 35min.On the first day of September, sunrise is at 07:32 and sunset at 20:55. On the last day of the month, sunrise is at 08:12 and sunset at 19:54 CEST.
Sunshine
The average sunshine in September is 7.3h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Lanvellec?
What are the least humid months in Lanvellec?
What is the average humidity in September in Lanvellec?
What is the driest month in Lanvellec?
How many days does it rain in September in Lanvellec?
When it does not snow in Lanvellec?
What is the average length of the day in September in Lanvellec?
When is the sunrise / sunset in September in Lanvellec?
How long on average sun shines in September in Lanvellec?
How high is the UV index in September in Lanvellec?
Average temperature in September
Lanvellec, France
- Average high temperature in September: 18°C
The warmest month (with the highest average high temperature) is August (19.1°C).
The month with the lowest average high temperature is January (9°C).
- Average low temperature in September: 12.7°C
The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is February (5.4°C).
Average pressure in September
Lanvellec, France
- Average pressure in September: 1018.2mbar
The month with the highest atmospheric pressure is September (1018.2mbar).
The month with the lowest atmospheric pressure is November (1011.9mbar).
Average wind speed in September
Lanvellec, France
- Average wind speed in September: 18km/h
The windiest months (with the highest average wind speed) are February and December (25.3km/h).
The calmest month (with the lowest average wind speed) is July (16.3km/h).
Average humidity in September
Lanvellec, France
- Average humidity in September: 82%
The month with the highest relative humidity is June (85%).
The months with the lowest relative humidity are February, March, April, September and October (82%).
Average rainfall in September
Lanvellec, France
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is November (82mm).
The driest month (with the least rainfall) is September (28mm).
Average rainfall days in September
Lanvellec, France
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is November (21.7 days).
The month with the least rainy days is September (13.7 days).
Average snowfall in September
Lanvellec, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (11mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Lanvellec, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Lanvellec, France
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in September
Lanvellec, France
- Average sunshine days in September: 11.1 days
The month with the most sunshine days is September (11.1 days).
The month with the least sunshine days is November (4.8 days).
Average UV index in September
Lanvellec, France
- Average UV index in September: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February and November (UV index 2).
Average cloud cover in September
Lanvellec, France
- Average cloud cover in September: 42
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are April, July and September (Cloud cover 42).
Average visibility in September
Lanvellec, France
- Average visibility in September: 10km
The months with the highest visibility are March, April, June, July and September (10km).
The months with the lowest visibility are January, February, May, August, October, November and December (9km).
Lanvellec, France
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